header {
    input {
        height: 80%;
        border: none; 
        flex-grow: 1;
        text-indent: 20px;
        margin-right: 15px;
        outline: none;
    }
}

main .list {  
    margin-top: 55px;
    background-color: #fff;
    .item {
        height: 40px;
        border-bottom: 1px solid #e8e8e8;
    }
}